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- fstopgm(1) Unix Programmer's Manual fstopgm(1)
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- NNNAAAMMMEEE
- fstopgm - convert a Usenix FaceSaver(tm) file into a portable graymap
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- SSSYYYNNNOOOPPPSSSIIISSS
- fffssstttooopppgggmmm [_f_s_f_i_l_e]
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- DDDEEESSSCCCRRRIIIPPPTTTIIIOOONNN
- Reads a Usenix FaceSaver(tm) file as input. Produces a portable graymap
- as output.
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- FaceSaver(tm) files sometimes have rectangular pixels. While _f_s_t_o_p_g_m
- won't re-scale them into square pixels for you, it will give you the
- precise _p_n_m_s_c_a_l_e command that will do the job. Because of this, reading
- a FaceSaver(tm) image is a two-step process. First you do:
- fstopgm > /dev/null
- This will tell you whether you need to use _p_n_m_s_c_a_l_e. Then use one of the
- following pipelines:
- fstopgm | pgmnorm
- fstopgm | pnmscale -whatever | pgmnorm
- To go to PBM, you want something more like one of these:
- fstopgm | pnmenlarge -3 | pgmnorm | pgmtopbm
- fstopgm | pnmenlarge -3 | pnmscale -whatever | pgmnorm | pgmtopbm
- You want to enlarge when going to a bitmap because otherwise you lose
- information; but enlarging by more than 3 does not look good.
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- FaceSaver is a registered trademark of Metron Computerware Ltd. of
- Oakland, CA.
-
- SSSEEEEEE AAALLLSSSOOO
- pgmtofs(1), pgm(5), pgmnorm(1), pnmenlarge(1), pnmscale(1), pgmtopbm(1)
-
- AAAUUUTTTHHHOOORRR
- Copyright (C) 1989 by Jef Poskanzer.
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- 06 April 89 1
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